Kamsing Nonlaopon และ Aumnuay Kananthai. (2010) The elementary solution and properties of the operators related to the diamond operators. Khon Kaen University:ม.ป.ท.Kamsing Nonlaopon และ Aumnuay Kananthai. 2010. The elementary solution and properties of the operators related to the diamond operators. ม.ป.ท.:Khon Kaen University;Kamsing Nonlaopon และ Aumnuay Kananthai. The elementary solution and properties of the operators related to the diamond operators. ม.ป.ท.:Khon Kaen University, 2010. Print.